Search: id:A023274
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%I A023274
%S A023274 13,31,37,67,73,181,367,541,661,997,1087,1117,1327,1861,2179,2293,2473,
%T A023274 2713,2719,3271,3727,4363,5281,5443,5749,7459,8089,8707,9109,9181,9337,
%U A023274 10357,10639,12553,13183,14923,16183,16249,17341,17419,17761,17923,17989
%N A023274 Numbers n such that n remains prime through 3 iterations of function 
               f(x) = 2x + 5.
%Y A023274 Sequence in context: A103665 A040050 A040086 this_sequence A129864 A080387 
               A097443
%Y A023274 Adjacent sequences: A023271 A023272 A023273 this_sequence A023275 A023276 
               A023277
%K A023274 nonn
%O A023274 1,1
%A A023274 David W. Wilson (davidwwilson(AT)comcast.net)

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